earring
(or earrings)

Usage note: If I'm just mentioning that someone has an earring I will
likely only pinch the lobe once. If I'm discussing the topic of earrings
and ear piercing and need to make distinctions between the two concepts then
I'll use a double movement for earring and a single, larger, emphasized
movement for "ear piercing."

EARRING:

EARRING: animated

Note: If you want to specifically
indicate the plural form of earrings then you should do this sign with two
hands (one on each earlobe).